This was a fun read.
Lotsa gun stuff and even some ham radio stuff; there's no post-apocalypse communication without it!
The big battle at the end was like The Road Warrior with unlimited ammo; lots of jalopies with mounted machine guns, crude welded-on armor plate and so forth.
And even a blimp!
And, like Road Warrior, there was a gasoline shortage, so most of the battle jalopies were hybrids. That would be a sight: a Prius with a machine gun mounted on the roof.
I had never heard of the author, so I wasn't expecting much, but I enjoyed it.